Uyazi: Ixesha elilindelekileyo phakathi kweebhloko ezimbini zeBitcoin kumndilili \(10\) imizuzu. Ngoku wenza intengiselwano ebalulekileyo yeBitcoin kwaye ulinde ngolangazelelo ukubona ukuba kwaye xa ivela kwibhloko elandelayo:
e50bfacc95975a4e7545d83d8954645f
Ekubeni awukhange ukhangele xa ibhloko yangaphambili igqityiwe, ngokwenene ulindele umyinge we- \( \frac{t}{2} = \frac{10}{2} = 5 \) imizuzu yexesha lokulinda. Emva kokuba \(5\) imizuzu emide idlulile, khangela ukuba ibhloko yokugqibela igqitywe nini na:
e50bfacc95975a4e7545d83d8954645f
Ibhloko yokugqibela yayisele igqityiwe \(7\) kwimizuzu edlulileyo. Ngoku usazi olu lwazi, ixesha elilindelekileyo liyatshintsha ukusuka \(5\) imizuzu ukuya kwinani elipheleleyo \(10\) imizuzu. Oko kuthetha ukuba: malunga nemizuzu \(3\) iya kuba ngoku. Ukhupha umyalelo ngokuphindaphindiweyo. Kwaye ulinde. Emva kwenye \(10\) imizuzu ufumana imvakalelo yokuba kukho into engalunganga.
Kodwa ke ukhumbule oko I-paradox yokulinda:
Ukuba iibhasi ziqhuba yonke \(t\) imizuzu ngokomndilili, ixesha lokulinda lexesha lokufika ngokungakhethiyo kwisikhululo sebhasi \(\frac{t}{2}\) nemizuzu \(\frac{t}{2}\) , kodwa kwimeko yokusasazwa ngokukhawuleza. imigama \(t\) .
Izehlo zebhlokhi zeBitcoin yinkqubo yePoisson kwaye ke ngoko zisasazwa ngokukhawuleza. Ekubeni iinkqubo zePoisson zingenankumbulo, ibhloko elandelayo nayo igqitywe ngemizuzu eyi- \(10\) ngokomndilili. Oko kuhlala kusebenza - nokuba kudala silindile. Umgangatho wokungabi nankumbulo usebenza ngasemva nangaphambili ngexesha.
Inokwenzeka njani loo nto?
Ukwenza oku, makhe siqwalasele ezi ngxelo zimbini zilandelayo:
- A) Elona xesha lokulinda eliphakathi phakathi kweebhloko ezimbini ngu \(10\) imizuzu, hayi \(20\) imizuzu.
- B) Ukuba kukhethwe indawo engacwangciswanga ngexesha, silindele ukuba ibhloko yangaphambili \(10\) imizuzu kwixesha elidlulileyo kunye nebhloko elandelayo \(10\) kwimizuzu kwixesha elizayo. Ngoko sinokulindela ixesha lokulinda lemizuzu \(20\) phakathi kweebhloko.
Sijonga zombini iingxelo.
Ukwenza oku, siqale sikhuphe idatha echaphazelekayo, ngokukodwa amaxesha apho iibhloko zagqitywa khona, kwifayile ye-TXT (iya kuqhutywa nge-node epheleleyo yendawo esekelwe kwi- bitcoind ):
e50bfacc95975a4e7545d83d8954645f
Oku kusinika le fayile yokubhaliweyo ilandelayo , esiyiqhubekekisa ngoku phambili kwaye siyigcine kwi /time.txt . Le nkqubo ilandelayo yomhlwa isetyenziselwa oku ngefayile ye /Cargo.toml:
e50bfacc95975a4e7545d83d8954645f
Ifayile /src/main.rs iqulethe eyona logic yovavanyo:
e50bfacc95975a4e7545d83d8954645f
Sifaka ukuxhomekeka, ukwakha inkqubo kwaye siqale:
e50bfacc95975a4e7545d83d8954645f
Enyanisweni, zombini ezi nkcazo ziyinyani xa sihlalutya umphumo:
e50bfacc95975a4e7545d83d8954645f
Oku kunokuchazwa ngolu hlobo lulandelayo: Ukuba amaxesha ebhloko ahluka kakhulu, ixesha lokulinda elithile liyahluka - ukuba siqhuba intengiselwano kwindawo ethile ngexesha, amathuba aphezulu ukuba siya kuphelela kwixesha apho ixesha lokulinda lide kunemizuzu eli-10 kungenxa yokuba la mathuba nawo athatha indawo enkulu kumgca wexesha ngenxa yexesha elide.